For more than two decades, the willingness of policy makers to rethink the presumption that economic regulation automatically benefits consumers has driven the deregulation of the transportation, telecommunications, banking, and electricity sectors. Yet antitrust regulation enjoys continued esteem in both the business and popular press. High-profile antitrust enforcement actions increasingly constitute a business hazard for aggressive, successful firms, threatening to disrupt innovation and economic growth. Since economic regulations—including antitrust—transfer wealth, they inevitably attract political entrepreneurs seeking entry or price regulation to hobble or preempt competition. Thus, a more skeptical interpretation of antitrust activism is that antitrust benefits political "entrepreneurs" rather than consumers. Such enforcement for competitive advantage often harms consumers by increasing prices and decreasing output by undermining little-understood efficiencies. Rethinking the true impact of these practices, from "collusion" to "predatory pricing" to "discrimination," should be a goal of policy makers.